/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemComponent.h
Plays a montage and handles replication and prediction based on passed in ability/activation info
virtual float PlayMontage ( [UGameplayAbility](API\Plugins\GameplayAbilities\Abilities\UGameplayAbility) * AnimatingAbility, [FGameplayAbilityActivationInfo](API\Plugins\GameplayAbilities\FGameplayAbilityActivationInfo) ActivationInfo, [UAnimMontage](API\Runtime\Engine\Animation\UAnimMontage) * Montage, float InPlayRate, [FName](API\Runtime\Core\UObject\FName) StartSectionName, float StartTimeSeconds )